Ribavirin causes not many drug side effects, the common drug side effects are body weakness, anemia, etc., usually disappear after stopping the drug, less common are headache, body fatigue, nausea, vomiting, insomnia, loss of appetite. Ribavirin is a broad-spectrum antiviral drug that can be used to treat bronchitis and viral pneumonia caused by respiratory syncytial virus. The drug does not cause many side effects. In general, the side effects of ribavirin are anemia and fatigue, but these side effects go away when the drug is stopped. Less common side effects include nausea and vomiting, headache, loss of appetite, insomnia, and fatigue, and can also cause a drop in white blood cells, a drop in red blood cells, and a drop in hemoglobin. However, high doses of the drug can cause heart damage. Contraindication: It is contraindicated in pregnant women and those who are allergic to the drug. Cautions: The drug should be used with caution in people with abnormal liver function and those with severe anemia. Respiratory syncytial virus pneumonia should be treated as soon as possible. Ribavirin should be used in accordance with medical advice and should not be abused by individuals.